Wyo. Stat. § 7-13-908: Witnesses.

(a) Only the following witnesses may be present at the execution:

(i) The director of the department of corrections and any persons deemed necessary to assist him in conducting the execution;

(ii) Two (2) physicians, including the prison physician;

(iii) The spiritual advisers of the prisoner;

(iv) The penitentiary chaplain;

(v) The sheriff of the county in which the prisoner was convicted; and

(vi) Not more than ten (10) relatives or friends requested by the prisoner.